Elevator for stairways



April 28, 11925. 1535mm C. C. CRISIPEN 1 ELEVATOR FOR STAIRWAYS Original Filed Oct. 4, 1921 &

WITNESSES Y INVE'NTOR 4 KIM/@2006, Lwspen,

A TTORNE YS Patented Apr. 28, 1925.

UNITED STATES rarest" Fries.

CLARENCE C. CBISPEN, OF HARRISBURG, PENNSYLVANIA.

ELEVATOR FO'R STAIRWAYS.

original application filed October 4, 1921, Serial No. 505.328. Divided and this application filed February 25, 1924. Serial- No. 695,048.

To all whom it may concern:

Be it known that I, CLARENCE C. Cmsrnn, a citizen of the United States, and a resident of Harrisburg, in the county of Dauphin and State of Pennsylvania, have invented certain new and useful Improvements in Elevators for Stairways, of which the following is a specification.

This invention relates to elevators for stairways; and the present application is a division of my patent #1317 3,813 issued Nov. 13, 1923.

The general, object of the invention is d0 provide an apparatus of the above character which may be installed in a stairway passage of substantially any type and serve for conveying people or if necessary baggage or the like, either up or down the stalrway as the case may require.

It is also an object of the invention that the apparatus be durable and operate in a manner to eliminate any possibility of mjury to persons carried thereby.

A still further object of the invention is that the parts and units constituting the apparatus be sim 1e and few in number whereby to reduce t e cost of installation of the apparatus to a minimum.

()ther objects, and objects relating to details of construction, combination and arrangement of parts will hereinafter appear in the detailed description to follow.

The invention is illustrated by way of enample in the accompanying drawings, in which:

Figure 1 is a partial sectional elevation illustrating the application of the invention,

Figure 2 is a front elevation of. the same, one wall of the stairway passage being shown in section,

Figure 3 is a rear elevation of the elevator car employed and also showing fragmentary portions of the supporting rails for the car and a similar portion of the associated stairway, and

' shown.

Upon the wall 11 there is mounted the rails 13 and 1 1, the rail 13 beingv above the rail 14 and said rails extending parallel with each other. Each rail 13 and 14 is channel shaped, comprising a bottom or bridge portion 15 and the side portions or flanges 16 and 17. It will be noted the side portion or flange 17 in each instance is of greater width than the side portion or flange 14. The side portion or flange 13 of each rail is bolted or otherwise rigidly secured to the wall 11'. Also the rail 14 preferably rests upon the stairway 10 as shown.

At the upper end of the rail 14 there is formed upon its flange 17 a lug 18 which journals the one end of a shaft 19, said shaft being journaled at its other end by a standard 20. The shaft 20 carries a drum 21.

The elevator car employed is generally designated by the reference character 22. This car preferably comprises a frame 23 which is of angular formation as shown. The top and bottom portions 24 and 25 respectively of the frame are parallel to each other. The frame carries a side wall 26 which has extending laterally therefrom a platform 27 which has associated therewith the two seats 28 preferably arranged as The platform and seats are hinged to the wall, and as shown in Figure 2, the platform is connected to each seat by a rod 29, the rod 29 in each instance being connected to the platform and associated seat whereby to permit folding movement of the platform and seats. It is of course to be understood that the structure of the elevator car shown and described may be easily changed to suit the dictates of the builder or manufacturer.

The upper portion 24 of the frame 23 has secured adjacent each end a block 28, each block having journaled therein two rollers 29' and 30. The rollers 29' are disposed to engage the bottom or bridge portion of the rail 13, while'the other rollers operate between the flanges 16 and 17 of said rail.

The lower portion 25 of the frame 23 carries a block 31 which journals the two rollers 32 and 33, the roller 33 being adapted to engage upon the bridge or bottom portion 15 of the rail 14 and the roller 32 being adapted to operate between the flanges 16 and 17 of this rail.

An emergency stop 34: is provided which is angular in shape and comprises a toothed portion 35 and an extension or arm 36. The stop member 34 is pivoted to the frame 23 and a spring 37 is extended between the toothed portion 35 of said stop and the frame 23 as shown in Figure 3.

A cable 38 has its one end connected to the free end of portion or extension 36 of the stop member 34 and this cable is then wound about the drum 21 and then extended downwardly through the floor 12. The cable is further extended about a drum 39 which maybe driven by an electric motor 40. Also the cable is extended from the drum 39 about the sheaves 41 and 42, and then secured to a floor sill, as shown. The sheave 41 carries weights 43.

The motor 40 and connected drum 39 may be of any approved type whereby to draw the elevator car 22 upward upon its tracks 13 and 14, or to permit downward movement of this car upon its tracks. Also any conventional form of electrical circuits can be employed whereby to start and stop the motor 40 and to rotate the same in. either direction for obtaining the desired movement of the car 22. Further,

a magnetic brake can be employed between the motor 40 and drum 39 as at 44, and this magnetic brake will operate in a manner understoodto stop the car when the motor 40 is not operating.

The manner of operating the elevator car is thought to be entirely apparent from the description heretofore given. Should the car become disconnected from the cable 38 the stop 39 will be brought to engage the bottom of the rail 14 and bring the car to a stop. The rollers 33 support the car for movement upon the rail 14'. The rollers 29' together with the rollers 30 and 32 hold the car against tilting in any direction. The apparatus as a Whole will operate in a smooth and reliable manner.

While I have shown and described the one form of my invention, it is to be understood that I am aware of the fact that the gen eral structure, combination and arrangement of parts may be changed by those skilled in the art without departing from the spirit of my invention, as indicated by the appended claims.

I claim 1. A stairway elevator comprising in combination, a channel rail ada ted to be secured to extend the length 0 the stairway, a car movable upon said channel rail, roller means carried by the car adapted to move 'in said channel rail for supporting the car,

a second rail spaced above the first named rail and roller means carried by the car adapted to engage the second rail and cooperate with the first named rail for holding the car against tilting or side movement.

2. A stairway elevator comprising in combination, a channel rail ada ted to be Secured to extend the length 0 the stairway, a car movable upon said channel rail, roller means carried by the car adapted to move in said channel rail for supporting the car, a second rail spaced above the first named rail and roller means carried by the car adapted to engage the second rail and cooperate with the first named rail for holding the car against tilting or side movement, cable and power means for drawing the car upward and lowering the same upon said rail, and means associated with the cable adapted to automatically serve as a stop to the car upon being released by the cable.

3. A stairway elevator comprising in combination, a channel rail ada ted to be secured to extend the length 0 the stairway, a car movable upon said channel rail, roller means carried by the car adapted to move in said channel rail for supporting the car, a second rail spaced above the first named rail and roller means carried by the car adapted to enga e the second rail and cooperate with the rst named rail for holding the car against ti lting.

4. A stairway elevator comprising a rail,

a frame, rollers for movably supporting the frame, and a platform extending laterally from the frame.

CLARENCE C. CRISPEN. 

